Drop jump asymmetry is associated with reduced sprint and change-of-direction speed performance in adult female soccer players
Authors
Bishop, ChrisTurner, Anthony
Maloney, Sean J.
Lake, Jason
Loturco, Irineu
Bromley, Tom
Read, Paul
Affiliation
Middlesex UniversityUniversity of Bedfordshire
University of Chichester
Nucleus of High Performance in Sport
Milton Keynes Dons Football Club
Aspetar Orthopaedic and Sports Medicine Hospital
Issue Date
2019-01-21
Metadata
Show full item recordAbstract
Studies that examine the effects of inter-limb asymmetry on measures of physical performance are scarce, especially in adult female populations. The aim of the present study was to establish the relationship between inter-limb asymmetry and speed and change-of-direction speed (CODS) in adult female soccer players. Sixteen adult players performed a preseason test battery consisting of unilateral countermovement jump (CMJ), unilateral drop jump (DJ), 10 m, 30 m, and 505 CODS tests. Inter-limb asymmetry was calculated using a standard percentage difference equation for jump and CODS tests, and Pearson's r correlations were used to establish a relationship between asymmetry and physical performance as well as asymmetry scores themselves across tests. Jump-height asymmetry from the CMJ (8.65%) and DJ (9.16%) tests were significantly greater (p < 0.05) than asymmetry during the 505 test (2.39%). CMJ-height asymmetry showed no association with speed or CODS. However, DJ asymmetries were significantly associated with slower 10 m (r = 0.52; p < 0.05), 30 m (r = 0.58; p < 0.05), and 505 (r = 0.52⁻0.66; p < 0.05) performance. No significant relationships were present between asymmetry scores across tests. These findings suggest that the DJ is a useful test for detecting existent between-limb asymmetry that might in turn be detrimental to speed and CODS performance. Furthermore, the lack of relationships present between different asymmetry scores indicates the individual nature of asymmetry and precludes the use of a single test for the assessment of inter-limb differences.Citation
Bishop C, Turner A, Maloney S, Lake J, Loturco I, Bromley T, Read P (2019) 'Drop jump asymmetry is associated with reduced sprint and change-of-direction speed performance in adult female soccer players', Sports (Basel, Switzerland), 7 (1), pp.-.Publisher
MDPIJournal
Sports (Basel, Switzerland)PubMed ID
30669686PubMed Central ID
PMC6359266Additional Links
https://www.mdpi.com/2075-4663/7/1/29https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359266/
Type
ArticleLanguage
enISSN
2075-4663ae974a485f413a2113503eed53cd6c53
10.3390/sports7010029
Scopus Count
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- Creative Commons
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/
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